Surname List: Begins with O


All surnames beginning with O, sorted alphabetically (total individuals):

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1. o 'Beolan (2)
2. o 'Brien (1)
3. o' Bannon (1)
4. o' Bell (9)
5. o' Beolain (1)
6. o' Boyle (1)
7. o' Breen (17)
8. o' Brennan (1)
9. o' Brian (12)
10. o' Brien (227)
11. o' Brien de Thomond (3)
12. o' Brien-Ara (1)
13. o' Bryan (5)
14. o' Bryen (4)
15. o' Byrne (4)
16. o' Caerbhaill (1)
17. o' Cahan (5)
18. o' Callaghan (35)
19. o' Carrol (1)
20. o' Carroll (7)
21. o' Cavanagh (2)
22. o' Cearbhall (2)
23. o' Cheinnselaig (14)
24. o' Chennselaig (1)
25. o' Chorb (1)
26. o' Chuind (1)
27. o' Conaing (1)
28. o' Connell (60)
29. o' Conner (1)
30. o' Conners (1)
31. o' Connor (61)
32. o' Connor-Kerry (1)
33. o' Connough (2)
34. o' Conor (6)
35. o' Conor Sligo (1)
36. o' Crega (1)
37. o' Cuillen (1)
38. o' Daire Rainey (1)
39. o' Dea (2)
40. o' Dell (6)
41. o' Dennel (1)
42. o' Docherty (2)
43. o' Donell (1)
44. o' Donnagan (1)
45. o' Donnel (1)
46. o' Donnell (53)
47. o' Donnell von Tyrconell (3)
48. o' Donnell von Tyrconnell (3)
49. o' Donoghue (1)
50. o' Donovan (3)
51. o' Draine (1)
52. o' Duibhne (1)
53. o' Dungalaig (1)
54. o' Duraghy (1)
55. o' Eagra (1)
56. o' Eidin (1)
57. o' Fallon (2)
58. o' Faolain (2)
59. o' Farrell (2)
60. o' Felan (1)
61. o' Ferral (1)
62. o' Ferrall-Boy (2)
63. o' Flaherty (4)
64. o' Fogarty (1)
65. o' Fogurty (1)
66. o' Garvey (2)
67. o' Grady (42)
68. o' Hagan (3)
69. o' Halloran (1)
70. o' Hara (28)
71. o' Hartigan (1)
72. o' Hea (1)
73. o' Hegerty (4)
74. o' Kane (2)
75. o' Keefe (6)
76. o' Keeff (1)
77. o' Keeley (3)
78. o' Kelly (6)
79. o' Kennedy (8)
80. o' Key (1)
81. o' Killey (1)
82. o' Knightley (2)
83. o' Lalor (1)
84. o' Lavery (2)
85. o' Leary (6)
86. o' Lorcain (1)
87. o' Loughnan (1)
88. o' Madden (2)
89. o' Mahony (1)
90. o' Maille Owen (1)
91. o' Maillend (3)
92. o' Malia (1)
93. o' Malley (3)
94. o' Mara (10)
95. o' Meagber (1)
96. o' Mealy (1)
97. o' Melaghlin (5)
98. o' Moore (14)
99. o' Morda (1)
100. o' More (5)
101. o' Mullane (1)
102. o' Mulloy (1)
103. o' Mulyran (1)
104. o' Murphy (1)
105. o' Neal (11)
106. o' Neale (4)
107. o' Neall (9)
108. o' Neil (3)
109. o' Néill (115)
110. o' Neill de Tyrone (1)
111. o' Nolan (1)
112. o' Phelan (1)
113. o' Pluingceid (1)
114. o' Quin (1)
115. o' Rear (1)
116. o' Regan (1)
117. o' Reilly (6)
118. o' Rorke (5)
119. o' Rourk (2)
120. o' Rourke (1)
121. o' Ruarc (5)
122. o' Ryn (1)
123. o' Shaughnessy (7)
124. o' Shea (1)
125. o' Sullivan (26)
126. o' Sullivan Beare (3)
127. o' Tard la Grange-Keith (1)
128. o' Toole (16)
129. O'Blennis (1)
130. Oachs (4)
131. Oadham (2)
132. Oak (1)
133. Oakden (1)
134. Oakes (33)
135. Oakey (5)
136. Oakleaf (1)
137. Oakley (16)
138. Oaks (6)
139. Oates (7)
140. Obachah (1)
141. Obama (5)
142. Obanion (1)
143. Obbard (1)
144. Obbema (1)
145. Obbens (1)
146. Obdam (1)
147. Obedience (1)
148. Obelink (1)
149. Obelitz (1)
150. Obell (1)
151. Oben (2)
152. Obenberg (1)
153. Obeniche (1)
154. Ober (7)
155. Oberacker zu Sieghartsstein (1)
156. Oberembt (2)
157. Oberhlotzer (1)
158. Oberholster (16)
159. Oberholzer (6)
160. Oberje (2)
161. Oberländer (4)
162. Oberleuter von Lassing (1)
163. Oberlin (2)
164. Obermair (2)
165. Obermayer (2)
166. Obermeyer (1)
167. Obernaür (1)
168. Oberstadt (1)
169. Obertacke (1)
170. Oberti (2)
171. Obijn (1)
172. Obolenska (1)
173. Obolenskaia (1)
174. Obolenskaja (1)
175. Obolensky (18)
176. Obolensky-Neledinsky-Meletzky (4)
177. Oboussier (1)
178. Obreen (12)
179. Obrenović (7)
180. Obrenovic (7)
181. Obrist (1)
182. Obukova (1)
183. Occo (2)
184. Och (2)
185. Ochoa de Ondategui (2)
186. Ochs von Gunzendorf (2)
187. Ochs von Sonnau & Reichersperg (2)
188. Ochsin von Gunzendorf (1)
189. Ochterlony (3)
190. Ocieska (1)
191. Ockel (2)
192. Ockens (4)
193. Ockers (14)
194. Ockers Cau (2)
195. Ockerse (7)
196. Ockersse (27)
197. Ockerz. (1)
198. Ockes (2)
199. Ockhorst (4)
200. Ockhuysen (1)
201. Ockinga (5)
202. Ockstee (1)
203. Ocskay de Ocsko (1)
204. Octavius (1)
205. Octon (1)
206. Odard (1)
207. Odart (5)
208. Odart de Rilly d'Oysonville (1)
209. Odberre (1)
210. Odde (1)
211. Oddie (6)
212. Odding (2)
213. Oddyle (2)
214. Odé (1)
215. Odekerken (1)
216. Odell (18)
217. Odendaal (21)
218. Odendahl (1)
219. Odenhoven (1)
220. Odenthal (1)
221. Oder (3)
222. Odescalchi (29)
223. Odescalchi di Novara (1)
224. Odet (1)
225. Odette (1)
226. Odey (1)
227. Odgers (1)
228. Odier (2)
229. Odijk (1)
230. Odilia (1)
231. Odinck (1)
232. Odingsells (3)
233. Odink (1)
234. Odino (1)
235. Odinot (2)
236. Odinsson (1)
237. Odiorne (1)
238. Odland (4)
239. Odling (1)
240. Odlum (2)
241. Odoe (1)
242. Odoevskaya (2)
243. Odoevsky (1)
244. Odom (4)
245. Odone (4)
246. Odor (1)
247. Odou (1)
248. Odoyevskaya (1)
249. Odrowazowna (1)
250. Odson (1)
251. Odum (1)
252. Odygd (3)
253. Oechslin (1)
254. Oedses (1)
255. Oedtsma (3)
256. Oedtsma van Juckema (3)
257. Oeheim (2)
258. Oehler (1)
259. Oehlmann (1)
260. Oehninger (1)
261. Oeijen (1)
262. Oelbermann (1)
263. Oeler (5)
264. Oelhafen (1)
265. Oeloffse (1)
266. Oelofse (17)
267. Oelrichs (5)
268. Oelwein (1)
269. Oem (77)
270. Oem van Arkel (1)
271. Oem van Bochoven (6)
272. Oem van Bockhoven (1)
273. Oem van Bokhoven (5)
274. Oem van Papendrecht (1)
275. Oem van Wijngaarden (34)
276. Oem van Wijngaerden (7)
277. Oem van Wyngaerden (1)
278. Oem van Zevender (2)
279. Oemcens (1)
280. Oenema (4)
281. Oentses (1)
282. Oepkes (2)
283. Oerinck (1)
284. Oerlemans (3)
285. Oertgen (2)
286. Oerthling (1)
287. Oertwein (2)
288. Oertwin (1)
289. Oesau (31)
   290. Oesebrand (1)
291. Oeser (2)
292. Oessendorff (1)
293. Oest (9)
294. Oesterberg (1)
295. Oesterlen (1)
296. Oesterling (1)
297. Oestermann (3)
298. Oesters (1)
299. Oesterschmidt (1)
300. Oestherhaut (1)
301. Oeteren (1)
302. Oeters van Maris (1)
303. Oetgens (10)
304. Oetgens van Waveren (5)
305. Oetgens van Waveren Pancras Clifford (16)
306. Oetgins (2)
307. Oetinger (2)
308. Oetker (9)
309. Oettingen (3)
310. Oettingen Ettinger-Halevi (1)
311. Oevermans (1)
312. Oexle von Friedenberg (1)
313. of Acre (1)
314. of Acton (2)
315. of Agade (2)
316. of Ailech (1)
317. of Albha (1)
318. of Alcester (1)
319. of Aleppo (1)
320. of Allardice (1)
321. of Aller (4)
322. of Allerdale (1)
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327. of Angus (16)
328. of Antioch (1)
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330. of Argyll (3)
331. of Argyllshire (12)
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333. of Armorica (2)
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335. of Aspinall (4)
336. of Athol (5)
337. of Atholl (6)
338. of Babylon (5)
339. of Balcarrie (1)
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341. of Bamborough (4)
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347. of Bernica (16)
348. of Bernicia (4)
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355. of Bothwell (1)
356. of Braytoft (1)
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360. of Brittany (1)
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362. of Buchan (2)
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364. of Burlington (1)
365. of Caithness (7)
366. of Callendar (3)
367. of Cambridge (11)
368. of Cardigan (1)
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371. of Carrick (7)
372. of Cathcart (1)
373. of Chattan (10)
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377. of Chisholm (1)
378. of Cimmerians (11)
379. of Cinneal Eoguin (1)
380. of Clarence (4)
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383. of Connaught (4)
384. of Corbi (1)
385. of Cornwall (28)
386. of Cranntock (1)
387. of Cumbria (2)
388. of Dalradia (6)
389. of Deheubarth (1)
390. of Deira (2)
391. of Denia & Balearic (1)
392. of Denmark (2)
393. of Desmond (1)
394. of Devon (3)
395. of Dimitia (1)
396. of Docwra (1)
397. of Dol (5)
398. of Dorset (1)
399. of Douni (2)
400. of Draffen (1)
401. of Dublin (9)
402. of Dule (1)
403. of Dull (1)
404. of Dunbar (23)
405. of Durham (3)
406. of Dyfed (4)
407. of East Anglia (11)
408. of Eccles (2)
409. of Egypt (11)
410. of England (80)
411. of Essex (4)
412. of Ethod (1)
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415. of Fife (5)
416. of Finland (1)
417. of Flint (1)
418. of Folkestone (1)
419. of Foremark (1)
420. of Frankton (1)
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423. of Galbraith (2)
424. of Galicia (3)
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426. of Galloway (3)
427. of Gask (1)
428. of Gibeah (2)
429. of Gilsland (3)
430. of Gloucester (13)
431. of Granada (1)
432. of Greece (1)
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440. of Haselden (5)
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446. of Holland (10)
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448. of Huntingdon (10)
449. of Huntington (5)
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451. of Ireland (14)
452. of Isbell (2)
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454. of Israel (1)
455. of Italy (2)
456. of Jerusalem (3)
457. of Jordan (1)
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459. of Judah (18)
460. of Jutland (3)
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462. of Kent (30)
463. of Khazaria (2)
464. of Kherait (3)
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468. of Kingsley (6)
469. of Kish (10)
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471. of Lancaster (8)
472. of Leinster (9)
473. of Lennox (24)
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475. of Lethra (2)
476. of Levanach (2)
477. of Levanax (1)
478. of Levenach (1)
479. of Libnah (1)
480. of Lincoln (3)
481. of Loarn (1)
482. of Lochaber (8)
483. of Lochore (1)
484. of Lorn (6)
485. of Lot (2)
486. of Lumley (7)
487. of Lundy (1)
488. of Luss (2)
489. of Lyon Logie (1)
490. of Macedonia (1)
491. of Man (5)
492. of Man & Dublin & the Isles (1)
493. of Mar (6)
494. of Marr (1)
495. of Mawddy (1)
496. of Meirionydd (2)
497. of Menteith (2)
498. of Menteth (2)
499. of Mercia (71)
500. of Mexico (2)
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502. of Misterton (1)
503. of Moab (2)
504. of Montal (1)
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519. of Northhampton (1)
520. of Northumberland (7)
521. of Northumbria (20)
522. of Norway (1)
523. of Nottingham (2)
524. of Novgorod (1)
525. of Orbe, Switzerland (1)
526. of Orkney (21)
527. of Orkney & Caithness (1)
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543. of Ross (10)
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546. of Ruthven (1)
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548. of Salisbury (3)
549. of Saltmarsh (1)
550. of Sanford (3)
551. of Scotland (73)
552. of Scots (1)
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554. of Scythia (1)
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557. of Shropshire (2)
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559. of Sicambri (15)
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564. of South-Gyrwas (1)
565. of Spain (2)
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567. of St. Martin (1)
568. of St. Sever (1)
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570. of Stra... (2)
571. of Strathbogie (1)
572. of Strathclyde (14)
573. of Strathearn (21)
574. of Strathnaver (2)
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576. of Sura (1)
577. of Surrey (2)
578. of Talou (1)
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581. of the Angles (3)
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584. of the Baltic Goths (1)
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592. of the Kumans (2)
593. of the Mountains (2)
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597. of the Picts (17)
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744. Oldcastle (8)
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